Genypterus brasiliensis (Regan, 1903)
(Ophidiidae, Ophidiiformes)
The collection contains otoliths from 14 individuals of this species, ranging from 402 to 705 mm of total length. Click here to see the map of the sampling area for the individuals of this species. The following summaries contains data from 8 analysed otoliths. See more detailed data here (in portuguese).
Otoliths from Genypterus brasiliensis, with total length of A. 402mm; B. 601mm; internal side A1; B1; external side A2; B2; profile of the ventral region A3; B3; click the figures for larger version*
Morphology:
Shape: elliptic. Anterior region: rounded (63%), oblique-round (25%), blunt to peaked (13%). Posterior region: blunt to lanceolated (63%), double-peaked (13%), oblique to peaked (13%), oblique to lanceolated (13%). Dorsal edge: lobed. Ventral edge: entire (50%), lobed to entire (25%), sinuate to entire (25%). Profile: concave-convex. Rostrum and antirostrum orientation: not applicable. Rostrum: absent. Antirostrum: absent. Pseudorostrum: absent. Pseudoantirostrum: absent. Sulcus acusticus: position median, orientation ascending, opening ostial, morphology heterosulcoid, colliculum heteromorphic, ostium tubular, cauda round-oval.
Description of the terms used
Morphometry:
Shape indices | Mean ± sd | Minimum | Maximum |
---|---|---|---|
OL / TL % | 2.93 ± 0.21 | 2.57 | 3.11 |
OH / OL % | 48.84 ± 3.03 | 44.43 | 54.00 |
OT / OL % | 16.75 ± 3.33 | 14.25 | 24.21 |
OT / OH % | 34.34 ± 6.72 | 28.98 | 49.06 |
Circularity | 21.84 ± 1.33 | 19.29 | 23.68 |
Rectangularity | 0.71 ± 0.02 | 0.68 | 0.74 |
* Vouchers:
Collection identifier for the individuals shown on photography and drawings:
- 13.2.GEBR.PADCT.CG.6637.4 (402 mm)
- 13.2.GEBR.RA1G.CR.E1/L1.2 (601 mm)
For more information about this species: